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Z3---4.15.1.UNS-Prf.s

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%------------------------------------------------------------------------------
% File     : Z3---4.15.1
% Problem  : SWC237-1 : TPTP v9.0.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp
% Command  : run_E %s %d THM

% Computer : n009.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Sat Jun 21 05:30:37 AM UTC 2025

% Result   : Unsatisfiable 1.11s 1.34s
% Output   : Proof 1.18s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   16
%            Number of leaves      :   94
% Syntax   : Number of formulae    :  228 (  63 unt;   0 typ;   0 def)
%            Number of atoms       : 1592 ( 444 equ)
%            Maximal formula atoms :   24 (   6 avg)
%            Number of connectives : 2396 (1111   ~;1155   |;   0   &)
%                                         ( 130 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   14 (   6 avg)
%            Maximal term depth    :    5 (   1 avg)
%            Number of FOOLs       :   79 (  79 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of predicates  :    9 (   7 usr;   1 prp; 0-3 aty)
%            Number of functors    :   10 (  10 usr;   3 con; 0-3 aty)
%            Number of variables   :  475 ( 428   !;   0   ?; 475   :)

% Comments : 
%------------------------------------------------------------------------------
tff(memberP_type,type,
    memberP: ( $i * $i ) > $o ).

tff(sk5_type,type,
    sk5: ( $i * $i * $i ) > $i ).

tff(hd_type,type,
    hd: $i > $i ).

tff(sk3_type,type,
    sk3: $i ).

tff(nil_type,type,
    nil: $i ).

tff(skaf82_type,type,
    skaf82: $i > $i ).

tff(sk1_type,type,
    sk1: $i ).

tff(app_type,type,
    app: ( $i * $i ) > $i ).

tff(cons_type,type,
    cons: ( $i * $i ) > $i ).

tff(ssList_type,type,
    ssList: $i > $o ).

tff(tl_type,type,
    tl: $i > $i ).

tff(ssItem_type,type,
    ssItem: $i > $o ).

tff(skaf83_type,type,
    skaf83: $i > $i ).

tff(1,plain,
    ( ( sk1 = sk3 )
  <=> ( sk1 = sk3 ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(2,axiom,
    sk1 = sk3,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_6) ).

tff(3,plain,
    sk1 = sk3,
    inference(modus_ponens,[status(thm)],[2,1]) ).

tff(4,plain,
    sk3 = sk1,
    inference(symmetry,[status(thm)],[3]) ).

tff(5,plain,
    ( ssList(sk3)
  <=> ssList(sk3) ),
    inference(rewrite,[status(thm)],[]) ).

tff(6,axiom,
    ssList(sk3),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_3) ).

tff(7,plain,
    ssList(sk3),
    inference(modus_ponens,[status(thm)],[6,5]) ).

tff(8,plain,
    ^ [U: $i] :
      refl(( ( ~ ssList(U)
          | ( app(nil,U) = U ) )
      <=> ( ~ ssList(U)
          | ( app(nil,U) = U ) ) )),
    inference(bind,[status(th)],[]) ).

tff(9,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( app(nil,U) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( app(nil,U) = U ) ) ),
    inference(quant_intro,[status(thm)],[8]) ).

tff(10,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( app(nil,U) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( app(nil,U) = U ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(11,axiom,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(nil,U) = U ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause74) ).

tff(12,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(nil,U) = U ) ),
    inference(modus_ponens,[status(thm)],[11,10]) ).

tff(13,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(nil,U) = U ) ),
    inference(skolemize,[status(sab)],[12]) ).

tff(14,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(nil,U) = U ) ),
    inference(modus_ponens,[status(thm)],[13,9]) ).

tff(15,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( app(nil,U) = U ) )
      | ~ ssList(sk3)
      | ( app(nil,sk3) = sk3 ) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( app(nil,U) = U ) )
      | ~ ssList(sk3)
      | ( app(nil,sk3) = sk3 ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(16,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( app(nil,U) = U ) )
    | ~ ssList(sk3)
    | ( app(nil,sk3) = sk3 ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(17,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( app(nil,U) = U ) )
    | ~ ssList(sk3)
    | ( app(nil,sk3) = sk3 ) ),
    inference(modus_ponens,[status(thm)],[16,15]) ).

tff(18,plain,
    app(nil,sk3) = sk3,
    inference(unit_resolution,[status(thm)],[17,14,7]) ).

tff(19,plain,
    ( ( nil = sk1 )
  <=> ( nil = sk3 ) ),
    inference(monotonicity,[status(thm)],[3]) ).

tff(20,plain,
    ( ( nil != sk1 )
  <=> ( nil != sk3 ) ),
    inference(monotonicity,[status(thm)],[19]) ).

tff(21,plain,
    ( ( nil != sk1 )
  <=> ( nil != sk1 ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(22,axiom,
    nil != sk1,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_7) ).

tff(23,plain,
    nil != sk1,
    inference(modus_ponens,[status(thm)],[22,21]) ).

tff(24,plain,
    nil != sk3,
    inference(modus_ponens,[status(thm)],[23,20]) ).

tff(25,plain,
    ^ [U: $i] :
      refl(( ( ~ ssList(U)
          | ( nil = U )
          | ( cons(hd(U),tl(U)) = U ) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ( cons(hd(U),tl(U)) = U ) ) )),
    inference(bind,[status(th)],[]) ).

tff(26,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(hd(U),tl(U)) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(hd(U),tl(U)) = U ) ) ),
    inference(quant_intro,[status(thm)],[25]) ).

tff(27,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(hd(U),tl(U)) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(hd(U),tl(U)) = U ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(28,plain,
    ^ [U: $i] :
      rewrite(( ( ~ ssList(U)
          | ( cons(hd(U),tl(U)) = U )
          | ( nil = U ) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ( cons(hd(U),tl(U)) = U ) ) )),
    inference(bind,[status(th)],[]) ).

tff(29,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( cons(hd(U),tl(U)) = U )
        | ( nil = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(hd(U),tl(U)) = U ) ) ),
    inference(quant_intro,[status(thm)],[28]) ).

tff(30,axiom,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( cons(hd(U),tl(U)) = U )
      | ( nil = U ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause104) ).

tff(31,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ( cons(hd(U),tl(U)) = U ) ),
    inference(modus_ponens,[status(thm)],[30,29]) ).

tff(32,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ( cons(hd(U),tl(U)) = U ) ),
    inference(modus_ponens,[status(thm)],[31,27]) ).

tff(33,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ( cons(hd(U),tl(U)) = U ) ),
    inference(skolemize,[status(sab)],[32]) ).

tff(34,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ( cons(hd(U),tl(U)) = U ) ),
    inference(modus_ponens,[status(thm)],[33,26]) ).

tff(35,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ( cons(hd(U),tl(U)) = U ) )
      | ~ ssList(sk3)
      | ( nil = sk3 )
      | ( cons(hd(sk3),tl(sk3)) = sk3 ) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ( cons(hd(U),tl(U)) = U ) )
      | ~ ssList(sk3)
      | ( nil = sk3 )
      | ( cons(hd(sk3),tl(sk3)) = sk3 ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(36,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ( cons(hd(U),tl(U)) = U ) )
    | ~ ssList(sk3)
    | ( nil = sk3 )
    | ( cons(hd(sk3),tl(sk3)) = sk3 ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(37,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ( cons(hd(U),tl(U)) = U ) )
    | ~ ssList(sk3)
    | ( nil = sk3 )
    | ( cons(hd(sk3),tl(sk3)) = sk3 ) ),
    inference(modus_ponens,[status(thm)],[36,35]) ).

tff(38,plain,
    cons(hd(sk3),tl(sk3)) = sk3,
    inference(unit_resolution,[status(thm)],[37,34,7,24]) ).

tff(39,plain,
    ^ [U: $i] :
      refl(( ( ~ ssList(U)
          | ( nil = U )
          | ssList(tl(U)) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ssList(tl(U)) ) )),
    inference(bind,[status(th)],[]) ).

tff(40,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssList(tl(U)) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssList(tl(U)) ) ),
    inference(quant_intro,[status(thm)],[39]) ).

tff(41,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssList(tl(U)) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssList(tl(U)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(42,plain,
    ^ [U: $i] :
      rewrite(( ( ~ ssList(U)
          | ssList(tl(U))
          | ( nil = U ) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ssList(tl(U)) ) )),
    inference(bind,[status(th)],[]) ).

tff(43,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ssList(tl(U))
        | ( nil = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssList(tl(U)) ) ),
    inference(quant_intro,[status(thm)],[42]) ).

tff(44,axiom,
    ! [U: $i] :
      ( ~ ssList(U)
      | ssList(tl(U))
      | ( nil = U ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause75) ).

tff(45,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ssList(tl(U)) ),
    inference(modus_ponens,[status(thm)],[44,43]) ).

tff(46,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ssList(tl(U)) ),
    inference(modus_ponens,[status(thm)],[45,41]) ).

tff(47,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ssList(tl(U)) ),
    inference(skolemize,[status(sab)],[46]) ).

tff(48,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ssList(tl(U)) ),
    inference(modus_ponens,[status(thm)],[47,40]) ).

tff(49,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssList(tl(U)) )
      | ( nil = sk3 )
      | ~ ssList(sk3)
      | ssList(tl(sk3)) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssList(tl(U)) )
      | ( nil = sk3 )
      | ~ ssList(sk3)
      | ssList(tl(sk3)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(50,plain,
    ( ( ~ ssList(sk3)
      | ( nil = sk3 )
      | ssList(tl(sk3)) )
  <=> ( ( nil = sk3 )
      | ~ ssList(sk3)
      | ssList(tl(sk3)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(51,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssList(tl(U)) )
      | ~ ssList(sk3)
      | ( nil = sk3 )
      | ssList(tl(sk3)) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssList(tl(U)) )
      | ( nil = sk3 )
      | ~ ssList(sk3)
      | ssList(tl(sk3)) ) ),
    inference(monotonicity,[status(thm)],[50]) ).

tff(52,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssList(tl(U)) )
      | ~ ssList(sk3)
      | ( nil = sk3 )
      | ssList(tl(sk3)) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssList(tl(U)) )
      | ( nil = sk3 )
      | ~ ssList(sk3)
      | ssList(tl(sk3)) ) ),
    inference(transitivity,[status(thm)],[51,49]) ).

tff(53,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ssList(tl(U)) )
    | ~ ssList(sk3)
    | ( nil = sk3 )
    | ssList(tl(sk3)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(54,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ssList(tl(U)) )
    | ( nil = sk3 )
    | ~ ssList(sk3)
    | ssList(tl(sk3)) ),
    inference(modus_ponens,[status(thm)],[53,52]) ).

tff(55,plain,
    ssList(tl(sk3)),
    inference(unit_resolution,[status(thm)],[54,48,7,24]) ).

tff(56,plain,
    ^ [U: $i] :
      refl(( ( ~ ssList(U)
          | ( nil = U )
          | ssItem(hd(U)) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ssItem(hd(U)) ) )),
    inference(bind,[status(th)],[]) ).

tff(57,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssItem(hd(U)) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssItem(hd(U)) ) ),
    inference(quant_intro,[status(thm)],[56]) ).

tff(58,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssItem(hd(U)) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssItem(hd(U)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(59,plain,
    ^ [U: $i] :
      rewrite(( ( ~ ssList(U)
          | ssItem(hd(U))
          | ( nil = U ) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ssItem(hd(U)) ) )),
    inference(bind,[status(th)],[]) ).

tff(60,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ssItem(hd(U))
        | ( nil = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ssItem(hd(U)) ) ),
    inference(quant_intro,[status(thm)],[59]) ).

tff(61,axiom,
    ! [U: $i] :
      ( ~ ssList(U)
      | ssItem(hd(U))
      | ( nil = U ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause76) ).

tff(62,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ssItem(hd(U)) ),
    inference(modus_ponens,[status(thm)],[61,60]) ).

tff(63,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ssItem(hd(U)) ),
    inference(modus_ponens,[status(thm)],[62,58]) ).

tff(64,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ssItem(hd(U)) ),
    inference(skolemize,[status(sab)],[63]) ).

tff(65,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ssItem(hd(U)) ),
    inference(modus_ponens,[status(thm)],[64,57]) ).

tff(66,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssItem(hd(U)) )
      | ( nil = sk3 )
      | ~ ssList(sk3)
      | ssItem(hd(sk3)) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssItem(hd(U)) )
      | ( nil = sk3 )
      | ~ ssList(sk3)
      | ssItem(hd(sk3)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(67,plain,
    ( ( ~ ssList(sk3)
      | ( nil = sk3 )
      | ssItem(hd(sk3)) )
  <=> ( ( nil = sk3 )
      | ~ ssList(sk3)
      | ssItem(hd(sk3)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(68,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssItem(hd(U)) )
      | ~ ssList(sk3)
      | ( nil = sk3 )
      | ssItem(hd(sk3)) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssItem(hd(U)) )
      | ( nil = sk3 )
      | ~ ssList(sk3)
      | ssItem(hd(sk3)) ) ),
    inference(monotonicity,[status(thm)],[67]) ).

tff(69,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssItem(hd(U)) )
      | ~ ssList(sk3)
      | ( nil = sk3 )
      | ssItem(hd(sk3)) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ssItem(hd(U)) )
      | ( nil = sk3 )
      | ~ ssList(sk3)
      | ssItem(hd(sk3)) ) ),
    inference(transitivity,[status(thm)],[68,66]) ).

tff(70,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ssItem(hd(U)) )
    | ~ ssList(sk3)
    | ( nil = sk3 )
    | ssItem(hd(sk3)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(71,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ssItem(hd(U)) )
    | ( nil = sk3 )
    | ~ ssList(sk3)
    | ssItem(hd(sk3)) ),
    inference(modus_ponens,[status(thm)],[70,69]) ).

tff(72,plain,
    ssItem(hd(sk3)),
    inference(unit_resolution,[status(thm)],[71,65,7,24]) ).

tff(73,plain,
    ^ [V: $i,U: $i] :
      refl(( ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) ) )),
    inference(bind,[status(th)],[]) ).

tff(74,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) ) ),
    inference(quant_intro,[status(thm)],[73]) ).

tff(75,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(76,plain,
    ^ [V: $i,U: $i] :
      rewrite(( ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) ) )),
    inference(bind,[status(th)],[]) ).

tff(77,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) ) ),
    inference(quant_intro,[status(thm)],[76]) ).

tff(78,axiom,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause120) ).

tff(79,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    inference(modus_ponens,[status(thm)],[78,77]) ).

tff(80,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    inference(modus_ponens,[status(thm)],[79,75]) ).

tff(81,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    inference(skolemize,[status(sab)],[80]) ).

tff(82,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    inference(modus_ponens,[status(thm)],[81,74]) ).

tff(83,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ( app(cons(U,nil),V) = cons(U,V) ) )
      | ~ ssItem(hd(sk3))
      | ~ ssList(tl(sk3))
      | ( app(cons(hd(sk3),nil),tl(sk3)) = cons(hd(sk3),tl(sk3)) ) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ( app(cons(U,nil),V) = cons(U,V) ) )
      | ~ ssItem(hd(sk3))
      | ~ ssList(tl(sk3))
      | ( app(cons(hd(sk3),nil),tl(sk3)) = cons(hd(sk3),tl(sk3)) ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(84,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) )
    | ~ ssItem(hd(sk3))
    | ~ ssList(tl(sk3))
    | ( app(cons(hd(sk3),nil),tl(sk3)) = cons(hd(sk3),tl(sk3)) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(85,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) )
    | ~ ssItem(hd(sk3))
    | ~ ssList(tl(sk3))
    | ( app(cons(hd(sk3),nil),tl(sk3)) = cons(hd(sk3),tl(sk3)) ) ),
    inference(modus_ponens,[status(thm)],[84,83]) ).

tff(86,plain,
    ( ~ ssList(tl(sk3))
    | ( app(cons(hd(sk3),nil),tl(sk3)) = cons(hd(sk3),tl(sk3)) ) ),
    inference(unit_resolution,[status(thm)],[85,82,72]) ).

tff(87,plain,
    app(cons(hd(sk3),nil),tl(sk3)) = cons(hd(sk3),tl(sk3)),
    inference(unit_resolution,[status(thm)],[86,55]) ).

tff(88,plain,
    ^ [U: $i] :
      refl(( ssList(skaf82(U))
      <=> ssList(skaf82(U)) )),
    inference(bind,[status(th)],[]) ).

tff(89,plain,
    ( ! [U: $i] : ssList(skaf82(U))
  <=> ! [U: $i] : ssList(skaf82(U)) ),
    inference(quant_intro,[status(thm)],[88]) ).

tff(90,plain,
    ( ! [U: $i] : ssList(skaf82(U))
  <=> ! [U: $i] : ssList(skaf82(U)) ),
    inference(rewrite,[status(thm)],[]) ).

tff(91,axiom,
    ! [U: $i] : ssList(skaf82(U)),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause13) ).

tff(92,plain,
    ! [U: $i] : ssList(skaf82(U)),
    inference(modus_ponens,[status(thm)],[91,90]) ).

tff(93,plain,
    ! [U: $i] : ssList(skaf82(U)),
    inference(skolemize,[status(sab)],[92]) ).

tff(94,plain,
    ! [U: $i] : ssList(skaf82(U)),
    inference(modus_ponens,[status(thm)],[93,89]) ).

tff(95,plain,
    ( ~ ! [U: $i] : ssList(skaf82(U))
    | ssList(skaf82(sk3)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(96,plain,
    ssList(skaf82(sk3)),
    inference(unit_resolution,[status(thm)],[95,94]) ).

tff(97,plain,
    ^ [U: $i] :
      refl(( ssItem(skaf83(U))
      <=> ssItem(skaf83(U)) )),
    inference(bind,[status(th)],[]) ).

tff(98,plain,
    ( ! [U: $i] : ssItem(skaf83(U))
  <=> ! [U: $i] : ssItem(skaf83(U)) ),
    inference(quant_intro,[status(thm)],[97]) ).

tff(99,plain,
    ( ! [U: $i] : ssItem(skaf83(U))
  <=> ! [U: $i] : ssItem(skaf83(U)) ),
    inference(rewrite,[status(thm)],[]) ).

tff(100,axiom,
    ! [U: $i] : ssItem(skaf83(U)),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause12) ).

tff(101,plain,
    ! [U: $i] : ssItem(skaf83(U)),
    inference(modus_ponens,[status(thm)],[100,99]) ).

tff(102,plain,
    ! [U: $i] : ssItem(skaf83(U)),
    inference(skolemize,[status(sab)],[101]) ).

tff(103,plain,
    ! [U: $i] : ssItem(skaf83(U)),
    inference(modus_ponens,[status(thm)],[102,98]) ).

tff(104,plain,
    ( ~ ! [U: $i] : ssItem(skaf83(U))
    | ssItem(skaf83(sk3)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(105,plain,
    ssItem(skaf83(sk3)),
    inference(unit_resolution,[status(thm)],[104,103]) ).

tff(106,plain,
    ^ [U: $i] :
      refl(( ( ~ ssList(U)
          | ( nil = U )
          | ( cons(skaf83(U),skaf82(U)) = U ) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ( cons(skaf83(U),skaf82(U)) = U ) ) )),
    inference(bind,[status(th)],[]) ).

tff(107,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(skaf83(U),skaf82(U)) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(skaf83(U),skaf82(U)) = U ) ) ),
    inference(quant_intro,[status(thm)],[106]) ).

tff(108,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(skaf83(U),skaf82(U)) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(skaf83(U),skaf82(U)) = U ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(109,plain,
    ^ [U: $i] :
      rewrite(( ( ~ ssList(U)
          | ( cons(skaf83(U),skaf82(U)) = U )
          | ( nil = U ) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ( cons(skaf83(U),skaf82(U)) = U ) ) )),
    inference(bind,[status(th)],[]) ).

tff(110,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( cons(skaf83(U),skaf82(U)) = U )
        | ( nil = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ( cons(skaf83(U),skaf82(U)) = U ) ) ),
    inference(quant_intro,[status(thm)],[109]) ).

tff(111,axiom,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( cons(skaf83(U),skaf82(U)) = U )
      | ( nil = U ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause109) ).

tff(112,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ( cons(skaf83(U),skaf82(U)) = U ) ),
    inference(modus_ponens,[status(thm)],[111,110]) ).

tff(113,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ( cons(skaf83(U),skaf82(U)) = U ) ),
    inference(modus_ponens,[status(thm)],[112,108]) ).

tff(114,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ( cons(skaf83(U),skaf82(U)) = U ) ),
    inference(skolemize,[status(sab)],[113]) ).

tff(115,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ( cons(skaf83(U),skaf82(U)) = U ) ),
    inference(modus_ponens,[status(thm)],[114,107]) ).

tff(116,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ( cons(skaf83(U),skaf82(U)) = U ) )
      | ~ ssList(sk3)
      | ( nil = sk3 )
      | ( cons(skaf83(sk3),skaf82(sk3)) = sk3 ) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ( cons(skaf83(U),skaf82(U)) = U ) )
      | ~ ssList(sk3)
      | ( nil = sk3 )
      | ( cons(skaf83(sk3),skaf82(sk3)) = sk3 ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(117,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ( cons(skaf83(U),skaf82(U)) = U ) )
    | ~ ssList(sk3)
    | ( nil = sk3 )
    | ( cons(skaf83(sk3),skaf82(sk3)) = sk3 ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(118,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ( cons(skaf83(U),skaf82(U)) = U ) )
    | ~ ssList(sk3)
    | ( nil = sk3 )
    | ( cons(skaf83(sk3),skaf82(sk3)) = sk3 ) ),
    inference(modus_ponens,[status(thm)],[117,116]) ).

tff(119,plain,
    cons(skaf83(sk3),skaf82(sk3)) = sk3,
    inference(unit_resolution,[status(thm)],[118,115,7,24]) ).

tff(120,plain,
    sk3 = cons(skaf83(sk3),skaf82(sk3)),
    inference(symmetry,[status(thm)],[119]) ).

tff(121,plain,
    cons(hd(sk3),tl(sk3)) = cons(skaf83(sk3),skaf82(sk3)),
    inference(transitivity,[status(thm)],[38,120]) ).

tff(122,plain,
    ^ [W: $i,V: $i,U: $i,X: $i] :
      refl(( ( ~ ssList(X)
          | ~ ssItem(U)
          | ~ ssList(V)
          | ( X = V )
          | ~ ssItem(W)
          | ( cons(U,V) != cons(W,X) ) )
      <=> ( ~ ssList(X)
          | ~ ssItem(U)
          | ~ ssList(V)
          | ( X = V )
          | ~ ssItem(W)
          | ( cons(U,V) != cons(W,X) ) ) )),
    inference(bind,[status(th)],[]) ).

tff(123,plain,
    ( ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(X)
        | ~ ssItem(U)
        | ~ ssList(V)
        | ( X = V )
        | ~ ssItem(W)
        | ( cons(U,V) != cons(W,X) ) )
  <=> ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(X)
        | ~ ssItem(U)
        | ~ ssList(V)
        | ( X = V )
        | ~ ssItem(W)
        | ( cons(U,V) != cons(W,X) ) ) ),
    inference(quant_intro,[status(thm)],[122]) ).

tff(124,plain,
    ( ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(X)
        | ~ ssItem(U)
        | ~ ssList(V)
        | ( X = V )
        | ~ ssItem(W)
        | ( cons(U,V) != cons(W,X) ) )
  <=> ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(X)
        | ~ ssItem(U)
        | ~ ssList(V)
        | ( X = V )
        | ~ ssItem(W)
        | ( cons(U,V) != cons(W,X) ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(125,plain,
    ^ [W: $i,V: $i,U: $i,X: $i] :
      trans(monotonicity(trans(monotonicity(trans(monotonicity(trans(monotonicity(rewrite(( ( ( cons(U,V) != cons(W,X) )
                          | ~ ssItem(W) )
                      <=> ( ~ ssItem(W)
                          | ( cons(U,V) != cons(W,X) ) ) )),
                      ( ( ( cons(U,V) != cons(W,X) )
                        | ~ ssItem(W)
                        | ~ ssItem(U) )
                    <=> ( ~ ssItem(W)
                        | ( cons(U,V) != cons(W,X) )
                        | ~ ssItem(U) ) )),
                    rewrite(( ( ~ ssItem(W)
                        | ( cons(U,V) != cons(W,X) )
                        | ~ ssItem(U) )
                    <=> ( ~ ssItem(U)
                        | ~ ssItem(W)
                        | ( cons(U,V) != cons(W,X) ) ) )),
                    ( ( ( cons(U,V) != cons(W,X) )
                      | ~ ssItem(W)
                      | ~ ssItem(U) )
                  <=> ( ~ ssItem(U)
                      | ~ ssItem(W)
                      | ( cons(U,V) != cons(W,X) ) ) )),
                  ( ( ( cons(U,V) != cons(W,X) )
                    | ~ ssItem(W)
                    | ~ ssItem(U)
                    | ~ ssList(X) )
                <=> ( ~ ssItem(U)
                    | ~ ssItem(W)
                    | ( cons(U,V) != cons(W,X) )
                    | ~ ssList(X) ) )),
                rewrite(( ( ~ ssItem(U)
                    | ~ ssItem(W)
                    | ( cons(U,V) != cons(W,X) )
                    | ~ ssList(X) )
                <=> ( ~ ssList(X)
                    | ~ ssItem(U)
                    | ~ ssItem(W)
                    | ( cons(U,V) != cons(W,X) ) ) )),
                ( ( ( cons(U,V) != cons(W,X) )
                  | ~ ssItem(W)
                  | ~ ssItem(U)
                  | ~ ssList(X) )
              <=> ( ~ ssList(X)
                  | ~ ssItem(U)
                  | ~ ssItem(W)
                  | ( cons(U,V) != cons(W,X) ) ) )),
              ( ( ( cons(U,V) != cons(W,X) )
                | ~ ssItem(W)
                | ~ ssItem(U)
                | ~ ssList(X)
                | ~ ssList(V) )
            <=> ( ~ ssList(X)
                | ~ ssItem(U)
                | ~ ssItem(W)
                | ( cons(U,V) != cons(W,X) )
                | ~ ssList(V) ) )),
            rewrite(( ( ~ ssList(X)
                | ~ ssItem(U)
                | ~ ssItem(W)
                | ( cons(U,V) != cons(W,X) )
                | ~ ssList(V) )
            <=> ( ~ ssList(X)
                | ~ ssItem(U)
                | ~ ssList(V)
                | ~ ssItem(W)
                | ( cons(U,V) != cons(W,X) ) ) )),
            ( ( ( cons(U,V) != cons(W,X) )
              | ~ ssItem(W)
              | ~ ssItem(U)
              | ~ ssList(X)
              | ~ ssList(V) )
          <=> ( ~ ssList(X)
              | ~ ssItem(U)
              | ~ ssList(V)
              | ~ ssItem(W)
              | ( cons(U,V) != cons(W,X) ) ) )),
          ( ( ( cons(U,V) != cons(W,X) )
            | ~ ssItem(W)
            | ~ ssItem(U)
            | ~ ssList(X)
            | ~ ssList(V)
            | ( X = V ) )
        <=> ( ~ ssList(X)
            | ~ ssItem(U)
            | ~ ssList(V)
            | ~ ssItem(W)
            | ( cons(U,V) != cons(W,X) )
            | ( X = V ) ) )),
        rewrite(( ( ~ ssList(X)
            | ~ ssItem(U)
            | ~ ssList(V)
            | ~ ssItem(W)
            | ( cons(U,V) != cons(W,X) )
            | ( X = V ) )
        <=> ( ~ ssList(X)
            | ~ ssItem(U)
            | ~ ssList(V)
            | ( X = V )
            | ~ ssItem(W)
            | ( cons(U,V) != cons(W,X) ) ) )),
        ( ( ( cons(U,V) != cons(W,X) )
          | ~ ssItem(W)
          | ~ ssItem(U)
          | ~ ssList(X)
          | ~ ssList(V)
          | ( X = V ) )
      <=> ( ~ ssList(X)
          | ~ ssItem(U)
          | ~ ssList(V)
          | ( X = V )
          | ~ ssItem(W)
          | ( cons(U,V) != cons(W,X) ) ) )),
    inference(bind,[status(th)],[]) ).

tff(126,plain,
    ( ! [W: $i,V: $i,U: $i,X: $i] :
        ( ( cons(U,V) != cons(W,X) )
        | ~ ssItem(W)
        | ~ ssItem(U)
        | ~ ssList(X)
        | ~ ssList(V)
        | ( X = V ) )
  <=> ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(X)
        | ~ ssItem(U)
        | ~ ssList(V)
        | ( X = V )
        | ~ ssItem(W)
        | ( cons(U,V) != cons(W,X) ) ) ),
    inference(quant_intro,[status(thm)],[125]) ).

tff(127,axiom,
    ! [W: $i,V: $i,U: $i,X: $i] :
      ( ( cons(U,V) != cons(W,X) )
      | ~ ssItem(W)
      | ~ ssItem(U)
      | ~ ssList(X)
      | ~ ssList(V)
      | ( X = V ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause171) ).

tff(128,plain,
    ! [W: $i,V: $i,U: $i,X: $i] :
      ( ~ ssList(X)
      | ~ ssItem(U)
      | ~ ssList(V)
      | ( X = V )
      | ~ ssItem(W)
      | ( cons(U,V) != cons(W,X) ) ),
    inference(modus_ponens,[status(thm)],[127,126]) ).

tff(129,plain,
    ! [W: $i,V: $i,U: $i,X: $i] :
      ( ~ ssList(X)
      | ~ ssItem(U)
      | ~ ssList(V)
      | ( X = V )
      | ~ ssItem(W)
      | ( cons(U,V) != cons(W,X) ) ),
    inference(modus_ponens,[status(thm)],[128,124]) ).

tff(130,plain,
    ! [W: $i,V: $i,U: $i,X: $i] :
      ( ~ ssList(X)
      | ~ ssItem(U)
      | ~ ssList(V)
      | ( X = V )
      | ~ ssItem(W)
      | ( cons(U,V) != cons(W,X) ) ),
    inference(skolemize,[status(sab)],[129]) ).

tff(131,plain,
    ! [W: $i,V: $i,U: $i,X: $i] :
      ( ~ ssList(X)
      | ~ ssItem(U)
      | ~ ssList(V)
      | ( X = V )
      | ~ ssItem(W)
      | ( cons(U,V) != cons(W,X) ) ),
    inference(modus_ponens,[status(thm)],[130,123]) ).

tff(132,plain,
    ( ( ~ ! [W: $i,V: $i,U: $i,X: $i] :
            ( ~ ssList(X)
            | ~ ssItem(U)
            | ~ ssList(V)
            | ( X = V )
            | ~ ssItem(W)
            | ( cons(U,V) != cons(W,X) ) )
      | ~ ssList(tl(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(skaf83(sk3))
      | ( skaf82(sk3) = tl(sk3) )
      | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) )
  <=> ( ~ ! [W: $i,V: $i,U: $i,X: $i] :
            ( ~ ssList(X)
            | ~ ssItem(U)
            | ~ ssList(V)
            | ( X = V )
            | ~ ssItem(W)
            | ( cons(U,V) != cons(W,X) ) )
      | ~ ssList(tl(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(skaf83(sk3))
      | ( skaf82(sk3) = tl(sk3) )
      | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(133,plain,
    ( ( ~ ssList(skaf82(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(tl(sk3))
      | ( skaf82(sk3) = tl(sk3) )
      | ~ ssItem(skaf83(sk3))
      | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) )
  <=> ( ~ ssList(tl(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(skaf83(sk3))
      | ( skaf82(sk3) = tl(sk3) )
      | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(134,plain,
    ( ( ~ ! [W: $i,V: $i,U: $i,X: $i] :
            ( ~ ssList(X)
            | ~ ssItem(U)
            | ~ ssList(V)
            | ( X = V )
            | ~ ssItem(W)
            | ( cons(U,V) != cons(W,X) ) )
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(tl(sk3))
      | ( skaf82(sk3) = tl(sk3) )
      | ~ ssItem(skaf83(sk3))
      | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) )
  <=> ( ~ ! [W: $i,V: $i,U: $i,X: $i] :
            ( ~ ssList(X)
            | ~ ssItem(U)
            | ~ ssList(V)
            | ( X = V )
            | ~ ssItem(W)
            | ( cons(U,V) != cons(W,X) ) )
      | ~ ssList(tl(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(skaf83(sk3))
      | ( skaf82(sk3) = tl(sk3) )
      | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) ) ),
    inference(monotonicity,[status(thm)],[133]) ).

tff(135,plain,
    ( ( ~ ! [W: $i,V: $i,U: $i,X: $i] :
            ( ~ ssList(X)
            | ~ ssItem(U)
            | ~ ssList(V)
            | ( X = V )
            | ~ ssItem(W)
            | ( cons(U,V) != cons(W,X) ) )
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(tl(sk3))
      | ( skaf82(sk3) = tl(sk3) )
      | ~ ssItem(skaf83(sk3))
      | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) )
  <=> ( ~ ! [W: $i,V: $i,U: $i,X: $i] :
            ( ~ ssList(X)
            | ~ ssItem(U)
            | ~ ssList(V)
            | ( X = V )
            | ~ ssItem(W)
            | ( cons(U,V) != cons(W,X) ) )
      | ~ ssList(tl(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(skaf83(sk3))
      | ( skaf82(sk3) = tl(sk3) )
      | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) ) ),
    inference(transitivity,[status(thm)],[134,132]) ).

tff(136,plain,
    ( ~ ! [W: $i,V: $i,U: $i,X: $i] :
          ( ~ ssList(X)
          | ~ ssItem(U)
          | ~ ssList(V)
          | ( X = V )
          | ~ ssItem(W)
          | ( cons(U,V) != cons(W,X) ) )
    | ~ ssList(skaf82(sk3))
    | ~ ssItem(hd(sk3))
    | ~ ssList(tl(sk3))
    | ( skaf82(sk3) = tl(sk3) )
    | ~ ssItem(skaf83(sk3))
    | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(137,plain,
    ( ~ ! [W: $i,V: $i,U: $i,X: $i] :
          ( ~ ssList(X)
          | ~ ssItem(U)
          | ~ ssList(V)
          | ( X = V )
          | ~ ssItem(W)
          | ( cons(U,V) != cons(W,X) ) )
    | ~ ssList(tl(sk3))
    | ~ ssItem(hd(sk3))
    | ~ ssList(skaf82(sk3))
    | ~ ssItem(skaf83(sk3))
    | ( skaf82(sk3) = tl(sk3) )
    | ( cons(hd(sk3),tl(sk3)) != cons(skaf83(sk3),skaf82(sk3)) ) ),
    inference(modus_ponens,[status(thm)],[136,135]) ).

tff(138,plain,
    ( ~ ssList(tl(sk3))
    | ~ ssList(skaf82(sk3))
    | ~ ssItem(skaf83(sk3))
    | ( skaf82(sk3) = tl(sk3) ) ),
    inference(unit_resolution,[status(thm)],[137,131,72,121]) ).

tff(139,plain,
    skaf82(sk3) = tl(sk3),
    inference(unit_resolution,[status(thm)],[138,55,105,96]) ).

tff(140,plain,
    app(cons(hd(sk3),nil),skaf82(sk3)) = app(cons(hd(sk3),nil),tl(sk3)),
    inference(monotonicity,[status(thm)],[139]) ).

tff(141,plain,
    app(cons(hd(sk3),nil),skaf82(sk3)) = sk3,
    inference(transitivity,[status(thm)],[140,87,38]) ).

tff(142,plain,
    app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) = app(nil,sk3),
    inference(monotonicity,[status(thm)],[141]) ).

tff(143,plain,
    ^ [V: $i,U: $i] :
      refl(( ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) ) )),
    inference(bind,[status(th)],[]) ).

tff(144,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) ) ),
    inference(quant_intro,[status(thm)],[143]) ).

tff(145,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(146,plain,
    ^ [V: $i,U: $i] :
      rewrite(( ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) ) )),
    inference(bind,[status(th)],[]) ).

tff(147,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) ) ),
    inference(quant_intro,[status(thm)],[146]) ).

tff(148,axiom,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause86) ).

tff(149,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    inference(modus_ponens,[status(thm)],[148,147]) ).

tff(150,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    inference(modus_ponens,[status(thm)],[149,145]) ).

tff(151,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    inference(skolemize,[status(sab)],[150]) ).

tff(152,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    inference(modus_ponens,[status(thm)],[151,144]) ).

tff(153,plain,
    ( ssList(nil)
  <=> ssList(nil) ),
    inference(rewrite,[status(thm)],[]) ).

tff(154,axiom,
    ssList(nil),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause8) ).

tff(155,plain,
    ssList(nil),
    inference(modus_ponens,[status(thm)],[154,153]) ).

tff(156,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ssList(cons(U,V)) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ssList(cons(hd(sk3),nil)) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ssList(cons(U,V)) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ssList(cons(hd(sk3),nil)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(157,plain,
    ( ( ~ ssItem(hd(sk3))
      | ~ ssList(nil)
      | ssList(cons(hd(sk3),nil)) )
  <=> ( ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ssList(cons(hd(sk3),nil)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(158,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ssList(cons(U,V)) )
      | ~ ssItem(hd(sk3))
      | ~ ssList(nil)
      | ssList(cons(hd(sk3),nil)) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ssList(cons(U,V)) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ssList(cons(hd(sk3),nil)) ) ),
    inference(monotonicity,[status(thm)],[157]) ).

tff(159,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ssList(cons(U,V)) )
      | ~ ssItem(hd(sk3))
      | ~ ssList(nil)
      | ssList(cons(hd(sk3),nil)) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ssList(cons(U,V)) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ssList(cons(hd(sk3),nil)) ) ),
    inference(transitivity,[status(thm)],[158,156]) ).

tff(160,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) )
    | ~ ssItem(hd(sk3))
    | ~ ssList(nil)
    | ssList(cons(hd(sk3),nil)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(161,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) )
    | ~ ssList(nil)
    | ~ ssItem(hd(sk3))
    | ssList(cons(hd(sk3),nil)) ),
    inference(modus_ponens,[status(thm)],[160,159]) ).

tff(162,plain,
    ssList(cons(hd(sk3),nil)),
    inference(unit_resolution,[status(thm)],[161,155,152,72]) ).

tff(163,plain,
    ^ [W: $i,V: $i,U: $i] :
      refl(( ( ~ ssList(U)
          | ~ ssList(V)
          | ~ ssList(W)
          | ( app(app(W,V),U) = app(W,app(V,U)) ) )
      <=> ( ~ ssList(U)
          | ~ ssList(V)
          | ~ ssList(W)
          | ( app(app(W,V),U) = app(W,app(V,U)) ) ) )),
    inference(bind,[status(th)],[]) ).

tff(164,plain,
    ( ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ~ ssList(W)
        | ( app(app(W,V),U) = app(W,app(V,U)) ) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ~ ssList(W)
        | ( app(app(W,V),U) = app(W,app(V,U)) ) ) ),
    inference(quant_intro,[status(thm)],[163]) ).

tff(165,plain,
    ( ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ~ ssList(W)
        | ( app(app(W,V),U) = app(W,app(V,U)) ) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ~ ssList(W)
        | ( app(app(W,V),U) = app(W,app(V,U)) ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(166,plain,
    ^ [W: $i,V: $i,U: $i] :
      trans(monotonicity(rewrite(( ( ~ ssList(U)
              | ~ ssList(V)
              | ~ ssList(W) )
          <=> ( ~ ssList(U)
              | ~ ssList(V)
              | ~ ssList(W) ) )),
          ( ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) )
        <=> ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) ) )),
        rewrite(( ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) )
        <=> ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) ) )),
        ( ( ~ ssList(U)
          | ~ ssList(V)
          | ~ ssList(W)
          | ( app(app(W,V),U) = app(W,app(V,U)) ) )
      <=> ( ~ ssList(U)
          | ~ ssList(V)
          | ~ ssList(W)
          | ( app(app(W,V),U) = app(W,app(V,U)) ) ) )),
    inference(bind,[status(th)],[]) ).

tff(167,plain,
    ( ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ~ ssList(W)
        | ( app(app(W,V),U) = app(W,app(V,U)) ) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ~ ssList(W)
        | ( app(app(W,V),U) = app(W,app(V,U)) ) ) ),
    inference(quant_intro,[status(thm)],[166]) ).

tff(168,axiom,
    ! [W: $i,V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ~ ssList(W)
      | ( app(app(W,V),U) = app(W,app(V,U)) ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause149) ).

tff(169,plain,
    ! [W: $i,V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ~ ssList(W)
      | ( app(app(W,V),U) = app(W,app(V,U)) ) ),
    inference(modus_ponens,[status(thm)],[168,167]) ).

tff(170,plain,
    ! [W: $i,V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ~ ssList(W)
      | ( app(app(W,V),U) = app(W,app(V,U)) ) ),
    inference(modus_ponens,[status(thm)],[169,165]) ).

tff(171,plain,
    ! [W: $i,V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ~ ssList(W)
      | ( app(app(W,V),U) = app(W,app(V,U)) ) ),
    inference(skolemize,[status(sab)],[170]) ).

tff(172,plain,
    ! [W: $i,V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ~ ssList(W)
      | ( app(app(W,V),U) = app(W,app(V,U)) ) ),
    inference(modus_ponens,[status(thm)],[171,164]) ).

tff(173,plain,
    ( ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) )
      | ~ ssList(nil)
      | ~ ssList(skaf82(sk3))
      | ~ ssList(cons(hd(sk3),nil))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) )
  <=> ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) )
      | ~ ssList(nil)
      | ~ ssList(skaf82(sk3))
      | ~ ssList(cons(hd(sk3),nil))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(174,plain,
    ( ( ~ ssList(skaf82(sk3))
      | ~ ssList(cons(hd(sk3),nil))
      | ~ ssList(nil)
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) )
  <=> ( ~ ssList(nil)
      | ~ ssList(skaf82(sk3))
      | ~ ssList(cons(hd(sk3),nil))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(175,plain,
    ( ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) )
      | ~ ssList(skaf82(sk3))
      | ~ ssList(cons(hd(sk3),nil))
      | ~ ssList(nil)
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) )
  <=> ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) )
      | ~ ssList(nil)
      | ~ ssList(skaf82(sk3))
      | ~ ssList(cons(hd(sk3),nil))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) ) ),
    inference(monotonicity,[status(thm)],[174]) ).

tff(176,plain,
    ( ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) )
      | ~ ssList(skaf82(sk3))
      | ~ ssList(cons(hd(sk3),nil))
      | ~ ssList(nil)
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) )
  <=> ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ~ ssList(W)
            | ( app(app(W,V),U) = app(W,app(V,U)) ) )
      | ~ ssList(nil)
      | ~ ssList(skaf82(sk3))
      | ~ ssList(cons(hd(sk3),nil))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) ) ),
    inference(transitivity,[status(thm)],[175,173]) ).

tff(177,plain,
    ( ~ ! [W: $i,V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ~ ssList(W)
          | ( app(app(W,V),U) = app(W,app(V,U)) ) )
    | ~ ssList(skaf82(sk3))
    | ~ ssList(cons(hd(sk3),nil))
    | ~ ssList(nil)
    | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(178,plain,
    ( ~ ! [W: $i,V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ~ ssList(W)
          | ( app(app(W,V),U) = app(W,app(V,U)) ) )
    | ~ ssList(nil)
    | ~ ssList(skaf82(sk3))
    | ~ ssList(cons(hd(sk3),nil))
    | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))) ) ),
    inference(modus_ponens,[status(thm)],[177,176]) ).

tff(179,plain,
    app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = app(nil,app(cons(hd(sk3),nil),skaf82(sk3))),
    inference(unit_resolution,[status(thm)],[178,155,172,96,162]) ).

tff(180,plain,
    app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) = sk1,
    inference(transitivity,[status(thm)],[179,142,18,4]) ).

tff(181,plain,
    ^ [B: $i,A: $i,C: $i] :
      refl(( ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | memberP(B,sk5(C,B,A)) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | memberP(B,sk5(C,B,A)) ) )),
    inference(bind,[status(th)],[]) ).

tff(182,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | memberP(B,sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | memberP(B,sk5(C,B,A)) ) ),
    inference(quant_intro,[status(thm)],[181]) ).

tff(183,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | memberP(B,sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | memberP(B,sk5(C,B,A)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(184,plain,
    ^ [B: $i,A: $i,C: $i] :
      trans(monotonicity(trans(monotonicity(rewrite(( ( ~ ssItem(A)
                  | ~ ssList(B)
                  | ~ ssList(C) )
              <=> ( ~ ssList(C)
                  | ~ ssItem(A)
                  | ~ ssList(B) ) )),
              ( ( ~ ssItem(A)
                | ~ ssList(B)
                | ~ ssList(C)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            rewrite(( ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            ( ( ~ ssItem(A)
              | ~ ssList(B)
              | ~ ssList(C)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) )
          <=> ( ~ ssList(C)
              | ~ ssItem(A)
              | ~ ssList(B)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
          ( ( ~ ssItem(A)
            | ~ ssList(B)
            | ~ ssList(C)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) ) )),
        rewrite(( ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) ) )),
        ( ( ~ ssItem(A)
          | ~ ssList(B)
          | ~ ssList(C)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | memberP(B,sk5(C,B,A)) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | memberP(B,sk5(C,B,A)) ) )),
    inference(bind,[status(th)],[]) ).

tff(185,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssItem(A)
        | ~ ssList(B)
        | ~ ssList(C)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | memberP(B,sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | memberP(B,sk5(C,B,A)) ) ),
    inference(quant_intro,[status(thm)],[184]) ).

tff(186,axiom,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssItem(A)
      | ~ ssList(B)
      | ~ ssList(C)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | memberP(B,sk5(C,B,A)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_9) ).

tff(187,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | memberP(B,sk5(C,B,A)) ),
    inference(modus_ponens,[status(thm)],[186,185]) ).

tff(188,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | memberP(B,sk5(C,B,A)) ),
    inference(modus_ponens,[status(thm)],[187,183]) ).

tff(189,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | memberP(B,sk5(C,B,A)) ),
    inference(skolemize,[status(sab)],[188]) ).

tff(190,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | memberP(B,sk5(C,B,A)) ),
    inference(modus_ponens,[status(thm)],[189,182]) ).

tff(191,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(192,plain,
    ( ( ~ ssList(skaf82(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(nil)
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) )
  <=> ( ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(193,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) )
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(nil)
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) ) ),
    inference(monotonicity,[status(thm)],[192]) ).

tff(194,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) )
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(nil)
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | memberP(B,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) ) ),
    inference(transitivity,[status(thm)],[193,191]) ).

tff(195,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | memberP(B,sk5(C,B,A)) )
    | ~ ssList(skaf82(sk3))
    | ~ ssItem(hd(sk3))
    | ~ ssList(nil)
    | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
    | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(196,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | memberP(B,sk5(C,B,A)) )
    | ~ ssList(nil)
    | ~ ssItem(hd(sk3))
    | ~ ssList(skaf82(sk3))
    | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
    | memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) ),
    inference(modus_ponens,[status(thm)],[195,194]) ).

tff(197,plain,
    memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))),
    inference(unit_resolution,[status(thm)],[196,155,190,72,96,180]) ).

tff(198,plain,
    ^ [B: $i,A: $i,C: $i] :
      refl(( ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
    inference(bind,[status(th)],[]) ).

tff(199,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) ) ),
    inference(quant_intro,[status(thm)],[198]) ).

tff(200,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(201,plain,
    ^ [B: $i,A: $i,C: $i] :
      trans(monotonicity(trans(monotonicity(rewrite(( ( ~ ssItem(A)
                  | ~ ssList(B)
                  | ~ ssList(C) )
              <=> ( ~ ssList(C)
                  | ~ ssItem(A)
                  | ~ ssList(B) ) )),
              ( ( ~ ssItem(A)
                | ~ ssList(B)
                | ~ ssList(C)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            rewrite(( ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            ( ( ~ ssItem(A)
              | ~ ssList(B)
              | ~ ssList(C)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) )
          <=> ( ~ ssList(C)
              | ~ ssItem(A)
              | ~ ssList(B)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
          ( ( ~ ssItem(A)
            | ~ ssList(B)
            | ~ ssList(C)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ssItem(sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ssItem(sk5(C,B,A)) ) )),
        rewrite(( ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ssItem(sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
        ( ( ~ ssItem(A)
          | ~ ssList(B)
          | ~ ssList(C)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | ssItem(sk5(C,B,A)) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
    inference(bind,[status(th)],[]) ).

tff(202,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssItem(A)
        | ~ ssList(B)
        | ~ ssList(C)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | ssItem(sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) ) ),
    inference(quant_intro,[status(thm)],[201]) ).

tff(203,axiom,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssItem(A)
      | ~ ssList(B)
      | ~ ssList(C)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | ssItem(sk5(C,B,A)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_8) ).

tff(204,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ssItem(sk5(C,B,A))
      | ( app(app(B,cons(A,nil)),C) != sk1 ) ),
    inference(modus_ponens,[status(thm)],[203,202]) ).

tff(205,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ssItem(sk5(C,B,A))
      | ( app(app(B,cons(A,nil)),C) != sk1 ) ),
    inference(modus_ponens,[status(thm)],[204,200]) ).

tff(206,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ssItem(sk5(C,B,A))
      | ( app(app(B,cons(A,nil)),C) != sk1 ) ),
    inference(skolemize,[status(sab)],[205]) ).

tff(207,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ssItem(sk5(C,B,A))
      | ( app(app(B,cons(A,nil)),C) != sk1 ) ),
    inference(modus_ponens,[status(thm)],[206,199]) ).

tff(208,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | ssItem(sk5(skaf82(sk3),nil,hd(sk3))) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | ssItem(sk5(skaf82(sk3),nil,hd(sk3))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(209,plain,
    ( ( ~ ssList(skaf82(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(nil)
      | ssItem(sk5(skaf82(sk3),nil,hd(sk3)))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 ) )
  <=> ( ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | ssItem(sk5(skaf82(sk3),nil,hd(sk3))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(210,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(nil)
      | ssItem(sk5(skaf82(sk3),nil,hd(sk3)))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 ) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | ssItem(sk5(skaf82(sk3),nil,hd(sk3))) ) ),
    inference(monotonicity,[status(thm)],[209]) ).

tff(211,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(skaf82(sk3))
      | ~ ssItem(hd(sk3))
      | ~ ssList(nil)
      | ssItem(sk5(skaf82(sk3),nil,hd(sk3)))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 ) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(hd(sk3))
      | ~ ssList(skaf82(sk3))
      | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
      | ssItem(sk5(skaf82(sk3),nil,hd(sk3))) ) ),
    inference(transitivity,[status(thm)],[210,208]) ).

tff(212,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) )
    | ~ ssList(skaf82(sk3))
    | ~ ssItem(hd(sk3))
    | ~ ssList(nil)
    | ssItem(sk5(skaf82(sk3),nil,hd(sk3)))
    | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(213,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) )
    | ~ ssList(nil)
    | ~ ssItem(hd(sk3))
    | ~ ssList(skaf82(sk3))
    | ( app(app(nil,cons(hd(sk3),nil)),skaf82(sk3)) != sk1 )
    | ssItem(sk5(skaf82(sk3),nil,hd(sk3))) ),
    inference(modus_ponens,[status(thm)],[212,211]) ).

tff(214,plain,
    ssItem(sk5(skaf82(sk3),nil,hd(sk3))),
    inference(unit_resolution,[status(thm)],[213,155,207,72,96,180]) ).

tff(215,plain,
    ^ [U: $i] :
      refl(( ( ~ ssItem(U)
          | ~ memberP(nil,U) )
      <=> ( ~ ssItem(U)
          | ~ memberP(nil,U) ) )),
    inference(bind,[status(th)],[]) ).

tff(216,plain,
    ( ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) )
  <=> ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) ) ),
    inference(quant_intro,[status(thm)],[215]) ).

tff(217,plain,
    ( ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) )
  <=> ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(218,plain,
    ^ [U: $i] :
      rewrite(( ( ~ memberP(nil,U)
          | ~ ssItem(U) )
      <=> ( ~ ssItem(U)
          | ~ memberP(nil,U) ) )),
    inference(bind,[status(th)],[]) ).

tff(219,plain,
    ( ! [U: $i] :
        ( ~ memberP(nil,U)
        | ~ ssItem(U) )
  <=> ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) ) ),
    inference(quant_intro,[status(thm)],[218]) ).

tff(220,axiom,
    ! [U: $i] :
      ( ~ memberP(nil,U)
      | ~ ssItem(U) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause71) ).

tff(221,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | ~ memberP(nil,U) ),
    inference(modus_ponens,[status(thm)],[220,219]) ).

tff(222,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | ~ memberP(nil,U) ),
    inference(modus_ponens,[status(thm)],[221,217]) ).

tff(223,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | ~ memberP(nil,U) ),
    inference(skolemize,[status(sab)],[222]) ).

tff(224,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | ~ memberP(nil,U) ),
    inference(modus_ponens,[status(thm)],[223,216]) ).

tff(225,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssItem(U)
            | ~ memberP(nil,U) )
      | ~ ssItem(sk5(skaf82(sk3),nil,hd(sk3)))
      | ~ memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssItem(U)
            | ~ memberP(nil,U) )
      | ~ ssItem(sk5(skaf82(sk3),nil,hd(sk3)))
      | ~ memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(226,plain,
    ( ~ ! [U: $i] :
          ( ~ ssItem(U)
          | ~ memberP(nil,U) )
    | ~ ssItem(sk5(skaf82(sk3),nil,hd(sk3)))
    | ~ memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(227,plain,
    ( ~ ! [U: $i] :
          ( ~ ssItem(U)
          | ~ memberP(nil,U) )
    | ~ ssItem(sk5(skaf82(sk3),nil,hd(sk3)))
    | ~ memberP(nil,sk5(skaf82(sk3),nil,hd(sk3))) ),
    inference(modus_ponens,[status(thm)],[226,225]) ).

tff(228,plain,
    $false,
    inference(unit_resolution,[status(thm)],[227,224,214,197]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.12  % Problem    : SWC237-1 : TPTP v9.0.0. Released v2.4.0.
% 0.06/0.12  % Command    : run_E %s %d THM
% 0.11/0.33  % Computer : n009.cluster.edu
% 0.11/0.33  % Model    : x86_64 x86_64
% 0.11/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.33  % Memory   : 8042.1875MB
% 0.11/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.11/0.33  % CPULimit   : 300
% 0.11/0.33  % WCLimit    : 300
% 0.11/0.33  % DateTime   : Fri Jun 20 08:41:33 EDT 2025
% 0.11/0.33  % CPUTime    : 
% 1.11/1.34  % SZS status Unsatisfiable
% 1.11/1.34  % SZS output start Proof
% See solution above
% 1.21/1.37  % E exiting
%------------------------------------------------------------------------------